Which is least likely to be the reason for resistance to major changes in job content and procedures by people who have been doing the job with moderate success for many years?

The least likely reason for resistance to major changes in job content and procedures by long-tenured employees is a lack of competence or skill in adapting to new methods. These individuals often possess valuable experience and knowledge, which can enhance their ability to understand and implement changes. Instead, resistance is more commonly driven by fear of the unknown, loss of established routines, or concerns about job security.